Use Descartes' rule of signs to help list the possibilities for the nature of the solutions of the equation. Do not solve the equation.5x2 + 15x - 30 = 0
A. 1 positive solution, 1 negative solution
B. 2 positive solutions
C. 2 negative solutions
D. 1 positive solution, 1 nonreal complex solution
E. 1 negative solution, 1 nonreal complex solution
Answer: A
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If r(t) is the position vector of a particle in the plane at time t, find the indicated vector.Find the acceleration vector.r(t) = (cos 3t)i + (2 sin t)j
A. a = (-9 cos 3t)i + (-4 sin t)j B. a = (-9 cos 3t)i + (-2 sin t)j C. a = (9 cos 3t)i + (-2 sin t)j D. a = (-3 cos 3t)i + (2 sin t)j
Solve using the absolute value property.
= 0
A. {-9} B. {-9, 9} C. ? D. {9}
Factor out the largest common factor.m(n2 - 8) - 5(n2 - 8)
A. mn2 - 8m - 5n2 + 40 B. (n2 - 8)(m + 5) C. (n2 - 8)(m - 5) D. (n2 - 5)(m - 8 )
Solve.log41 = x
A. x = 0 B. x = 16 C. x = 1 D. x = 4